Anonymous Tracing

This chapter describes anonymous tracing, tracing that is not associated with any DTrace
consumer. Anonymous tracing is used in situations when no DTrace consumer processes can
run. The most common use of anonymous tracing is to permit device driver
developers to debug and trace activity that occurs during system boot. Any tracing
that you can do interactively you can do anonymously. However, only the super
user may create an anonymous enabling, and only one anonymous enabling can exist
at any time.